A. 1. Check ticket expiration details: Review the terms and conditions for ticket purchases within the app to understand the expiration policy. 2. Plan ahead: Purchase tickets closer to your travel time to avoid expiration issues. 3. Use the app regularly: Familiarize yourself with the ticketing system to better manage your purchases and avoid losing tickets.

B. 4. Set reminders: Use your phone's calendar or reminder app to alert you before the ticket expiration time.